GRT High-Temperature Connectors, up to +500 °C
−55 to +500 °C · stainless steel · hermetic receptacles
PRG High-Temperature Circular Connectors, up to +400 °C
Up to +400 °C · 2 to 47 contacts · shielded or unshielded
PRG is a threaded high-temperature circular connector for DC and AC circuits in hot equipment. Six standard layouts from 2 to 47 contacts are rated up to +400 °C, with straight or 90°, shielded or unshielded backshells. A higher-current version with Ø 2.5 mm (25 A) and Ø 3.5 mm (50 A) contacts is rated from −55 to +350 °C.
- Temperature
- −60 to +400 °C
- Contacts
- 2 to 47
- Current rating
- 7–10 A (25 / 50 A version)
- Shell
- Threaded, shells 20–60
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Key features
- Rated up to +400 °C
- Threaded coupling
- Six standard layouts: 2, 4, 7, 16, 26 and 47 contacts
- Straight or 90° backshells, shielded or unshielded
- Higher-current version: Ø 2.5 mm (25 A) and Ø 3.5 mm (50 A) contacts, −55 to +350 °C
Specifications
| Parameter | Value | Condition |
|---|---|---|
| Working voltage | 350 V | |
| Contact resistance | 1.0 mΩ | |
| Insulation resistance | ≥ 1000 MΩ | Normal conditions |
| Dielectric withstanding voltage | ≥ 1500 V | Higher-current version, room temperature |
| Parameter | Value | Condition |
|---|---|---|
| Operating temperature | −60 to +400 °C | |
| Operating temperature | −55 to +350 °C | Higher-current version |
| Vibration | 1–2000 Hz, 10 g | |
| Shock | 300 g single; 150 g repeated | |
| Durability | 250 mating cycles, ≥ 100 h at temperature | 500 cycles for the higher-current version |
Parameters not listed above — for example vibration level, leak rate or other environmental tests — can be tested to your requirements, including third-party testing.
Contact layouts
| Shell–contacts–layout | Contacts | Current per contact | Total current | Mating force |
|---|---|---|---|---|
| 20-2-6 | 2 | 10 A | 20 A | 4.0 kg |
| 28-4-8 | 4 | 10 A | 40 A | 3.5 kg |
| 28-7-9 | 7 | 10 A | 70 A | 14.5 kg |
| 40-16-4 | 16 | 10 A | 160 A | 36.0 kg |
| 48-26-3 | 26 | 9 A | 234 A | 55.0 kg |
| 60-47-3 | 47 | 7 A | 329 A | 100.0 kg |
Contact sizes and current ratings
| Contact size | Engaging diameter | Contact resistance | Current rating | Wire size |
|---|---|---|---|---|
| Ø 2.5 mm | 2.5 mm | ≤ 17 mΩ | 25 A | — |
| Ø 3.5 mm | 3.5 mm | ≤ 5 mΩ | 50 A | — |
How to order
PRG [shell] [contact] [contacts] [A] [backshell]
Example: PRG20J2AQ — Shell 20, pin contacts, 2 contacts, receptacle, straight unshielded backshell
| Code segment | Options |
|---|---|
| Shell | |
| Contact | |
| Contacts | |
| Type | |
| Backshell |
Contact diameter in the higher-current table is stated for that version; send us your current requirement.
Contact counts and terminations
Standard contact counts
- 2
- 4
- 7
- 16
- 26
- 47
Terminations
- Solder
Typical applications
- Engines and gas turbines
- Industrial furnaces and heat treatment
- High-temperature test rigs
- Power generation equipment
Frequently asked questions
What temperature can PRG handle?
The standard layouts are rated from −60 to +400 °C; the higher-current version with 25 A and 50 A contacts from −55 to +350 °C.
Selection guides
Related series
PPH25M Thermocouple Connectors with Compensating Contacts
Chromel / alumel contacts · 4 to 47 contacts · −60 to +200 °C
From sample to production
Send your requirements
Part number, drawing, pin-out or a short description of your application.
Configuration and quote
Our engineers match the configuration and reply with a drawing and quotation.
Samples
Samples are built to order. The minimum order quantity is 10 pieces, and samples and production orders each take 4–8 weeks. Third-party testing to your specification is available on request.
Your approval
You test the samples in your own equipment and approve them.
Series production
Production follows the approved sample configuration, with machining, molding, plating and assembly in our own Shenyang factory.
Need a quote or a drawing?
Send your part number, pin-out or drawing. Every inquiry is acknowledged by email within 1 business day, and an engineer follows up with a matched configuration, drawing or quotation.